If the Correlation Between Identical Twins on Trait R Is

question 222

Multiple Choice

If the correlation between identical twins on trait R is higher than is the correlation between fraternal twins on trait R, behavior geneticists conclude that

• A) genetic factors are important in the development of trait R.
• B) genetic factors are irrelevant to the development of trait R.
• C) environmental factors are irrelevant in the development of trait R.
• D) genetic factors and environmental factors play equivalent roles in the development of trait R.

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Definitions:

Genetic Diversity

The total number of genetic characteristics in the genetic makeup of a species, contributing to its ability to adapt and evolve.

Mutations

Changes in the DNA sequence of an organism's genome that can result in variations in physical appearance, function, or behavior.

Serotonin

A neurotransmitter involved in many functions, including mood regulation, digestion, and sleep.

Deoxyribonucleic Acid

A molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms.